and i also think it will drive our intelligence sharing to a much higher and more sophisticated degree. martha: let's hope so. it is pretty amazing that we are waiting for this incident to hopefully do that as well. thank you for sharing some of your expertise with us from the tsa. good to talk to you, sir. >> thank you. martha: let's go across the newsroom to trace for more context on the story. trace: martha, we told you those subject to enhance screening of passengers flying to the united states for 14 specific countries including what the u.s. deams state sponsors of terrorism: cuba, iran, sudan, syria and also what are being called the countries of interest. those nations, afghanistan, algeria, lebanon, libya, algeria, iraq, saudi arabia, somalia, and yemen. a senior fellow with the brookings institution. you saw the list. we get those. talk to us about the others.